Honeywell T8400C1008 Digital Single-Stage Heating and Cooling Thermostat

Regulating your indoor environment has never been easier! The T8400 electronic digital thermostat provides nonprogrammable control for 24-V heating and cooling systems. The large digital display is easy to read and indicates temperature in either Fahrenheit or Celsius. Keys are conveniently located beside the display, but the Fan and System switches are placed at the thermostat's lower edge to prevent accidental setting changes. The T8400 requires no batteries for setting retention; it stores setpoints in permanent memory for retention even in the event of a power failure.

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